Maybe I am just getting old but I don't see the Florida theme parks as somewhere for big thrill seeking rides, to me they are a mixture of theme park & museum, maybe because we grew up with films like Jaws, King Kong, Back to the Future etc.
To the younger generation I guess they don't have the same meaning, now Simpsons, HP(although I do love the HP area) are more relevant plus they want bigger, better faster rides.
They have to freshen up and renew, just wish they could leave the classics as well rather than replace them. Maybe it will be something better but we will still miss Jaws.